Motor vehicle body

ABSTRACT

A motor vehicle body which includes a windshield and a body structure located in front thereof, especially for passenger motor vehicles, in which the windshield and/or other parts of the vehicle are kept substantially free of dust and dirt by providing apertures in the body structure in front of the windshield through which either at least a part of the dynamic air flow, which would normally flow against the windshield and/or other part to be kept clean, is sucked off into and through the vehicle body or an additional air stream or air flow is blown directly toward the windshield and/or other vehicle wall to be kept clean.

United States Patent 1 9 Wiltert 1451 Oct. 3, 1972 1 1 MOTOR VEHICLEBODY 2,223,378 12/1940 Martin ..296/91 72 Inventor: Karl wat 43 Fritzvon 2,697,490 Taber 91 X Gravenitz-Strasse, 7016 Gerlingen- FOREIGNPATENTS OR APPLICATIONS waldstadt Germany 749 596 7/1933 296/91 rance[221 Wed: 22, 1970 1,374,747 8/1964 France ..296/91 21] App] 4,353497,450 5/1930 Germany ..296/91 522,487 6/1940 Great Britain ..296/91Related US. Application Data 482,045 6/ 1953 Italy ..296/91 [62]Division of Ser. No. 666,387, Sept. 8, 1967,

Pat. No. 3,516,707.

[30] Foreign Application Priority Data Sept. 8, 1966 Germany ..D 51 055Nov. 11, 1966 Germany ..D 51 525 [52] US. Cl ..296/91 [51] Int. Cl...B60j 9/04 [58] Field of Search ..296/91, 1 S

[56] References Cited UNITED STATES PATENTS 2,719,339 10/1955 Clem..296/91 2,133,927 10/1938 Riel ..296/91 1,789,016 l/193l Morgan..296/91 1,865,675 7/1932 Cavanaugh ..296/91 UX 2,022,833 12/1935 Welch..296/91 Primary Examiner-Benjamin Hersh Assistant Examiner-John PekarAttorney-Craig, Antonelli and Hill ABSTRACT A motor vehicle body whichincludes a windshield and a body structure located in front thereof,especially for passenger motor vehicles, in which the windshield and/orother parts of the vehicle are kept substantially free of dust and dirtby providing apertures in the body structure in front of the windshieldthrough which either at least a part of the dynamic air flow, whichwould normally flow against the windshield and/or other part to be keptclean, is sucked off into and through the vehicle body or an additionalair stream or air flow is blown directly toward the windshield and/orother vehicle wall to be kept clean.

14 Claims, 9 Drawing Figures PATENTEDnm I972 SHEET 3 0F 3 FIG. 6b

MOTOR VEHICLE BODY This is a division of application Ser. No. 666,387,filed Sept. 8, 1967 now US. Pat. No. 3,516,707.

BACKGROUND OF THE INVENTION The present invention relates to a motorvehicle body with a windshield and with a body pre-structure arranged infront of the windshield, especially for passenger motor vehicles.

Known motor vehicle bodies of the prior art entail the disadvantage thatthe windshield window becomes very dirty or dusty, especially when dustyor wet roads dampened by rains are travelled over. Since thisshortcoming could be eliminated only partly by the windshield wipersgenerally provided in passenger motor vehicles, the present inventionaims at avoiding by other means a soiling of the windshield panes bydirt or dust.

SUMMARY OF THE INVENTION Starting with the recognition that for thesolution of the underlying aim, the air stream or flow in front of thewindshield pane or of the vehicle wall to be kept clean has to beinfluenced, the present invention essentially consists in that aperturesare provided in the vehicle outer body panels, preferably in the bodypre-structure within the area of the windshield, through which apertureseither at least a portion of the air stream flowing against thewindshield or against the vehicle wall in question is sucked off throughthe vehicle body or an additional air stream is blown directly towardthe windshield or such vehicle wall. It can be' achieved in this mannerthat the air, for example, enriched with dust or dirt is far-reachinglyprevented from a contact with the windshield because it is eitherdeflected into other paths prior to reaching the windshield pane or isdeflected upwardly by a sort of air curtain in front of the windshieldpane.

The present invention can be further developed in a particularlyadvantageous manner in that the apertures in front of the windshield areconnected with air-guide channels or ducts which either terminate withinareas of the body, in which prevails a vacuum during the drive so that asuction effect is exerted at the air inlet apertures during the drive,or that the air-guide channels or ducts begin at such places at whichprevails an excess pressure during the drive; in that case, a dischargeblower effect occurs at the air discharge apertures. Since such anarrangement of the air-guide channels is able to produce generally onlyslight air flows, it is appropriate if, for the production or for theassistance of the air flows, blowers are provided in the air-guidechannels with the aid of which the suction flow or discharge flow, asthe case may be, can be brought to the desired strength. I

An advantageous construction is obtained if two airinlet apertures areprovided in front of the windshield whose air-guide channels lead insideof the vehicle approximately V-shaped downwardly to a common dischargechannel which becomes wider in a diffuserlike manner in the directiontoward the vehicle floor because this construction is relativelyspace-saving. In an appropriate manner the discharge channel mayterminate to the rearas viewed in the direction of flowof a recessedstep in the body floor so that the discharge is located within an areaof the body in which a vacuum occurs during the drive. It isparticularly advantageous if two discharge channels are provided whichtenninate each to the rear- -as viewed in the direction of flow-ofrecessed steps at the lateral surfaces of the body because in thismanner there is achieved, in addition to a relatively good vacuum effector suction effect at the discharge of the outlet or discharge channels,the still further advantage that in addition to the windshield, also thelateral walls of the body can be protected far-reachingly againstbecoming dirty or dusty. The air masses discharge at the lateralsurfaces, which were sucked off or drawn off in front of the windshield,are generally freed along their path through the body of dirt and dustand form a protective curtain against the soiled air flows at the sidesof the vehicle. In case of need, however, special filteringinstallations or the like of any conventional construction may also beprovided for the purpose of cleaning the sucked-off air prior todischarge thereof.

Another, equally advantageous construction of the present invention canbe obtained if one or several airoutlet or air-discharge apertures areprovided in the vehicle outer body panels in front of the windshieldwhich are operatively connected with at least one airguide channel orduct beginning at the front end of the body, because an assurance thenexists in that case that the dynamic air pressure occurring during thedrive at the front end of the body can be utilized for the supply of theair in the direction toward the windshield.

A particularly favorable embodiment is realized if two lateral air-guidechannels arranged inside of the body are each provided with onerespective inlet aperture at the front end of the body. With this typeof construction as well as with all other constructions mentionedherein, a particularly favorable and appropriate combination with theengine-cooling installation generally provided in passenger motorvehicles can be achieved if the air-guide channels for drawing-off theair in front of the windshield or for blowing air thereagainst areprovided with-heat-exchangers for the cooling of the engine coolingwater and if, additionally, these air guide channels are connected withconventional air-guide channels for venting and/or heating the vehicleinterior and are adapted to be closed off with respect thereto in aconventional manner by closure devices. The air masses heated by theengine radiators or coolers can be made useful by this construction forheating purposes. It is possible in connection therewith to preclude thesoiling of the windshield in a farreaching manner as well as to simplifyconsiderably the all-weather heating and air-conditioning system of themotor vehicle because the heated air masses, for exampie, with thefirst-described embodiment in which the dynamic air flow is sucked offin front of the windshield, can be withdrawn directly downstream of thecooler for the vehicle heating system arranged in the air-guide channelsso that heat losses due to long air-guide channels are eliminated.

It has been additionally discovered that the air flow or air streamdirected against the windshield and/or against the vehicle parts to bekept clean or the air stream or flow sucked off in front of thewindshield not only is able to prevent a soiling but that a particularlyfavorable maintenance as regards cleanliness of vehicle parts takesplace if the apertures in the vehicle body pre-structure, describedhereinabove, are constructed as discharge blower nozzle or slots or thelike which direct the air flow upwardly in front of the windshieldand/or the vehicle walls to be kept clean. The air stream or air flowenriched with dust or dirt is thereby blown off already prior toreaching the windshield and/or other vehicle parts to be kept clean insuch a manner that practically no soiling occurs any longer.

Particularly advantageous is thereby a construction in which the, airstream or flow is blown out or discharged directly forwardly at an angleof about 30 to'the vertical because with this construction, in additionto a completely satisfactory keeping-clean of the corresponding vehicleparts, also the air resistance coefficient for the streamlining of themotor vehicle can be reduced. It has further been discovered to befavorable if thedischarge slots or the like are accommodated directly infront of the windshield and/or the vehicle walls to be kept clean.

Accordingly, it is an object of the present invention to provide avehicle body construction which eliminates by simple means theaforementioned shortcomings encountered with the prior artconstructions.

Another object of the present invention resides in a motor vehicle bodywhich effectively prevents, by extremely simple means, the soiling ofthe windshield and/or other vehicle parts. v

A further object of the present invention is a simple and space-savinginstallation for motor vehicle bodies which effectively keeps the roaddirt and dust away from the windshield and/or other vehicle outer wallsurfaces.

Still another object of the present invention resides in an installationin motor vehicle bodies, especially in passenger motor vehicles, whichkeeps the windshield as well as lateral wall parts of the vehicle freeof dust and dirt.

Still another object of the present invention resides in an installationof the aforementioned type which is not only reliable in operation andrelatively inexpensive in cost but which additionally permitsconsiderable simplification in the heating and ventilating system of themotor vehicle.

A further object of the present'invention resides in a system forkeeping certain parts of a motor vehicle free from dust and dirt which,at the same time, reduces the air resistance coefficient of the vehicle.

These and further objects, features and advantages of the presentinvention will become more obvious' matically illustrated in FIG. 1;

FIG. 3a is a schematic front elevational view of the right half of oneembodiment of a motor vehicle body constructed in accordance with thepresent invention utilizing, in principle, the arrangement shown inFIGS.

4 l and 2, in which the dynamic air-flow occurring during the drive issucked off in front of the windshield and deflected in the downwarddirection;

FIG. 3b is a schematic front elevational view of the left half ofanother embodiment of a motor vehicle body constructed in accordancewith the present invention utilizing, in principle, the arrangementshown in FIGS. '1 and 2, in which the dynamic air-flow occurring duringthe drive is sucked off in front of the windshield and deflected towardthe sides; v

FIG. 4 is a longitudinal cross-sectional view through the motor vehicleof FIG. 3a;

FIG. 5 is a schematic, longitudinal cross-sectional view through amodified embodiment of a vehicle body constructed in accordance with thepresent invention in which the windshield is blown at from in frontthereof in the manner of an air-curtain in'addition to the dynamicair-flow occurring during the drive;

FIGS. 6a and 6b are partial plan views on the right half and left half,respectively, of the schematically illustrated vehicle body of FIG. 5and illustrating two possible modifications thereof; and

FIG. 7 is a schematic longitudinal, cross-sectional view through apreferred embodiment of a vehicle body in accordance with the presentinvention.

Referring now to the drawing wherein like reference numerals are usedthroughout the various views to designate like parts, and moreparticularly to FIG. 1, reference numeral 1 generally designates thereina motor vehicle body of any conventional construction which includes abody pre-structure l and a windshield 2. The basic possibilities of theair guidance according to the present invention are illustrated in onesingle embodiment, in which apertures for sucking off the air areprovided in the vehicle outer body panels in front of the windshield 2.The air-inlet apertures may, as indicated by reference numeral 3, bearranged at a relatively large distance in front of the windshield 2;however, they may also be located directly in front of the windshield 2as indicated by reference numeral 4. It can be readily'seen from FIG. 2that these inlet apertures may be arranged in the center longitudinalplane of the motor vehicle; however, they may also be arranged in thelateral areas of the vehicle body 1, as indicated by'reference numerals3' and 4. Of course, a combination of apertures arranged laterally andin the longitudinal center plane of the vehicle is also within thepurview of the present invention.

As can be further seenfrom FIGS. 1 and 2, two basic possibilities existas regards the arrangement of the outlet apertures 5 and 6 correspondingto the inlet apertures 3 and 4 and the inlet apertures 3' and 4',respectively. The outlet apertures 5 may be arranged,'for example, atthe forward door joint in the lateral surfaces of the body. This airoutlet 5 may thereby be so located and placed that it is located in thelateral surfaces of the body within the area of a recessed step 7, asviewed in the direction of flow according to the illustrated arrows. Theadvantage is achieved thereby that a relatively large vacuum occurs atthe outlet or discharge aperture 5 during the. drive which is able toexert a suction effect on the inlet apertures 3 and/or 4. In lieu of orin combinationv with the step 7, a step 8 projecting outdescribedeffect.

If, for example, the inlet aperture 3 is now chosen in the longitudinalcenter plane of the body in connection with the outlet apertures 5, thenthe flow of the deflected dynamic air stream or flow takes place throughthe body 1 along the stream line or flow line designated by referencenumeral 9. If, instead of the inlet aperture 3 the inlet apertures 3'are selected, then the entering dynamic air flow is deflected along thepaths indicated by reference numerals 10. The air is conducted in ananalogous manner to the outlet apertures 5 if it enters through theinlet apertures 4 and/or 4.

However, it is also possible to arrange, in lieu of the outlet ordischarge apertures 5 in the lateral surfaces of the body, the outlet ordischarge apertures 6 at the lower pedal floor and/or in the centertunnel. The deflected dynamic air flow then proceeds, for instance, fromthe inlet aperture 3 according to the arrows 11 to the outlet ordischarge aperture or apertures 6 FIG. 2), and in an analogous mannerfrom the inlet apertures 3' and/or 4 and/or 4'. Of course, it is alsopossible to arrange inlet apertures at the places designated byreference numerals 3 and/or 4 and outlet apertures both at the placesdesignated by reference numerals 5 as well as at those designated byreference numerals 6. In the embodiment of FIG. 1, the outlet ordischarge aperture 6 terminates, analogous to the apertures 5,'behind aprojecting step 8' provided at the body floor and/or within an arearecessed with respect to the remainder of the body floor.

In the embodiments according to FIGS. 30 and 3b the air inlet apertures3' and 4' arranged within the area in front of the windshield 2 and leadin a V-shaped manner to a conventional blower arranged centrally withinthe body. Heat-exchangers 13 are provided in each of the air-guidechannels upstream of the blower 12 which serve for the cooling of enginecooling water. The air entering at the apertures 3' and 4 is conductedin these embodiments through the heat-exchangers 13 to the blower 12 andfrom therethrough the outlet apertures 6 in a downward direction. It isnoted that the,

axis of the blower 12, indicated vertical in FIGS. 3a and 3b, may alsobe arranged disposed at any inclination, in the longitudinal ortransverse direction and may adapt itself to the given requirements ofthe air guide means.

In the embodiment of FIG. 3b there is provided, in addition to the airdischarge at the motor vehicle body underside or in lieu of thisdischarge aperture at the lateral surfaces of the motor vehicle, thestep 7 with the air outlet or discharge aperture 5 indicated in FIGS. 1and 2, by means of which a soiling of the lateral surfaces of the motorvehicle can be partly avoided.

It can be seen from FIG. 4 how the heat-exchanger 13 is arranged withinthe body 1. The air can enter in this embodiment through the apertures 3and 4' and, depending on the position of the closure member 14, isconducted either exclusively to the outlet aperture( s) 6 or is guidedagainst the inside of the windshield 2 in the direction of the arrow 16through the air-guide line in communication with the air guide channels3, 4', 6. Inlet apertures leading to the vehicle interior may also beconnected with the closure member 14 which may be accommodated in aknown manner in proximity of the floor.

FIG. 5 illustrates another possibility of the construction according tothe present invention, in which air outlet or. discharge apertures 17are arranged within the area in front of the windshield 2, through whicha sort of air curtain can be blown in front of the windshield 2 in [thedirectionofthe arrow 18. Each air discharge aperture 17 isoperativelyconnected with an air guide channel 19 whose inletaperture 20 is locatedat the front end of the motor vehicle body 1. The headexchanger21 isarranged ashort distance downstream of the inlet aperture 20 whichassumes in a conventional manner the cooling of the engine coolingwater. The heat-exchangermay be additionally equipped with a blowerwhich increases the effect of the dynamic pressure during the ,drive infront of the inlet aperture 20 so that a blowing discharge effect isachieved at the aperture 17. Additional air-guide channels 22 and 23 maybe connected with the air-guide channel 19 which, according to FIGS. 6 aand 6b, may be provided on bothsides within the vehicle body. Theadditional airguide channels 22 and 23 guide in a conventional mannereither fresh-air or air preheated by the heatexchanger for the purposeof temperature and climate control into the vehicle interior.

In the embodiment according to FIG. 6a the heatexchanger 21 equippedwitha blower 24 is arranged within the air-guide channel 19 which splits upwithin its area in front of the windshield 2 into a channel portionterminating at the discharge-aperture l7 and into a channel portion,adapted to be closed off by conventional closure member 25, which passesover into the air-guide channels 22 and 23.

In-contradistinction thereto, in the embodiment of FIG. 6b the air-guidechannel is subdivided starting ap proximately at the air inlet aperture20 into-an airguide channel 19", in which. is arranged a heatexchanger21"with a blower 24', andinto an air-guide channel 19' withoutheat-exchanger. Within the area of the air-guide channels 19" and 19facing the windshield 2, a third air-guide channel 19" is providedwhich, adapted to be closed by the closure devices 25 and 25', protrudespartly into the air-guide channel 19" and partly into the air-guidechannel 19'. It is possible with this arrangement to selectively blowboth pre-heated as well as non-preheated air in the direction of thearrows 18 against the windshield; however, it is also possible toconduct selectively cold or preheated air through the air guide channel19" into the interior of the vehicle by'the way of air-guide channels22' and 23'. However, it is further possible with this arrangement toutilize the air'flows in any desired quantity and/or mixture ratio fromthe outside and/or from the inside for defrosting or dust-removal of thepane. Additionally, further freshsair channels may be provided which maybe utilized in an analogous manner for blowing against the windshieldand/or for the ventilation of the interior space. v

In the embodiment of FIG. 7, an air-guide channel 19 is arranged insideof a motor vehicle body 1, which sucks the air from an air-inletaperture 20 into the interior of the vehicle body, for example, with theaid of a blower I2, and which blows out the air through discharge slotsor discharge nozzles 17 in the direction of the arrow 18 in the upwarddirection. The direction of the arrow 18 is thereby inclined in thisembodiment forwardly opposite the driving direction at an angle a ofabout 30 with respect to the vertical plane indicated by referencenumeral 26.

As mentioned hereinabove in FIG. 7, the construc tive arrangement of theair-guide channels 19 (or 19', 19", 19") and the particular constructionof the discharge apertures 17 maybe chosen in accordance with any of theembodiments described above. The discharge apertures may be constructed,for instance, in the form of conventional nozzles, which produce definedjets or streams, or in the .form of conventional discharge blower slots,which expel or blow out wide jets or streams as protective curtain infront of the windshield 2. The air-guide channel 19 may be constructedas single channel located in the center longitudinal plane of thevehicle which branches out to the various individual discharge apertures17. However, two parallel air-guide channels may start from the frontend of the vehicle of from other places of the motor vehicle which servefor the guidance of the air. It is only important that the air dischargetakes place in front of the vehicle parts to be kept clean-in thisembodiment the windshield-in a direction opposite the driving directionor only directly upwardly in the vertical direction.

r If, for example, air streams are blown out of a discharge aperture 17in front of the windshield 2 in the direction of the arrow 18, when theair discharge apertures 17 are constructed as a wide, nozzle-shapedslot, as indicated by reference numeral 17', which extends parallel tothe windshield pane, and if air is blown out of these slots with a highvelocity (in a -l 5 scale model, air was blown out, for example, with avelocity greater than 65 in/sec.), then the windshield 2 was kept nearlycompletely free from dirt and the air-resistance coefficient c wasreduced by approximately 30 per cent. With the arrangement according tothe present invention of the air-discharge aperture, onethereforerealizes a smaller air resistance of the vehicle (which in thetests was exposed to an air blast with a velocity of about lOO km/hour).1

Pressure measurements on models of vehicles demonstrated that thesmaller air resistance can be tracked back to a' reduction of thepressure peaks at the vehicle contour. The reduction of the airresistance of the construction according to the present invention makesit possible, for example, to compensate farreachingly for the energynecessary for the driving power of an axial blower suitable for highstream or flow velocities for purposes of blowing out air in front ofthe windshield. The present invention therefore permits it, as shown inFIG. 7, to blow away upwardly in front of the windshield the air flowingagainst the vehicle, whence to prevent a'contact of dust and dirt withthe windshield and additionally, depending on the type of vehicleconstruction on the driving velocity, to provide at least a part of theenergy necessary for the blower 12 by a reduction of the air resistancecoefficient.

While l have shown and described several embodiments of the presentinvention, it is understood that the same is not limited thereto but issusceptible of numerous changes and modifications as known to a personskilled in the art, and I therefore do not wish to be limited to thedetails shown and described hereiri 'bnly for illustrative purposes butintend to cover all such changes and modifications as are within'thescope of those skilled in the art.

lclaim: 3

1. In a motor vehicle body including a body wall, a windshield and abody structure disposed in front thereof, the improvementcomprisingmeans for directing an air flow past at least one of the bodywall and the windshield of the motor vehicle to provide effectiveprotection therefor against soiling by road dirt and dust, including anopening located directly in front of said at least one of the windshieldand the body wall to be protected in said body structure and deflectionmeans, providing a flow of air directed upwardly and forwardly at anangle of approximately 30 with respect to the vertical, for deflectingthe air stream normally directed at the windshield when the motorvehicle is in forward motion, so that said air stream is deflectedupwardly. v

2. A motor vehicle body according to claim 1, further including channelmeans in communication with said deflection means for conducting astream of air to said deflection means, said stream of air being thesource of said flow of air.

3. A motor vehicle body according to claim 2, further including inletmeans disposed within a portion of the body for creating a positive airpressure during the forward motion of the vehicle, whereby said streamof air is conducted through said channel means.

4. A motor vehicle body according to claim 3, wherein said channel meanscommunicates with said deflection means through a blower, whereby saidstream of air is conducted at a high velocity to said deflection meansby the action of said blower.

5. A motor vehicle body according to claim 3, further including aheat-exchanger located within said channel means.

6. A motor vehicle body according to claim 2, wherein said channel meanscommunicates with said deflection means through a blower, whereby saidstream of air is conducted at a high velocity to said deflection meansby the action of said'blower.

7. A motor vehicle body according to claim 2, further includingair-guide means in, communication with said channel means for ventingand heating the vehicle interior space.

8. A motor vehicle body according to claim 7, wherein said air-guidemeans communicates with said channel means through a selectivelyoperable closure means for selectively adjusting the amount of airpassage between said channel means and said air-guide means.

9. A motor vehicle body according to claim 8 further including aheat-exchanger located withinsaid channel means.

10. A motor vehicle body according to claim 9, wherein said channelmeans communicates with said deflection means through a blower, whereinsaid stream of air is conducted at a high velocity to said deflectionmeans by the action of said blower.

' 11. A motor vehicle body according to claim 8, further including'inletmeans disposed within a portion of the body for creating a positive airpressure during the forward motion of the vehicle, whereby said streamof air is conducted through said channel means.

12. A motor vehicle body according to claim 2,

5 further including a heat-exchanger located within said channel means.

13. A motor vehicle body according to claim 1, wherein said opening isslotted.

14. A motor vehicle body according to claim 1, wherein said opening isprovided with nozzles.

1. In a motor vehicle body including a body wall, a windshield and abody structure disposed in front thereof, the improvement comprisingmeans for directing an air flow past at least one of the body wall andthe windshield of the motor vehicle to provide effective protectiontherefor against soiling by road dirt and dust, including an openinglocated directly in front of said at least one of the windshield and thebody wall to be protected in said body structure and deflection means,providing a flow of air directed upwardly and forwardly at an angle ofapproximately 30* with respect to the vertical, for deflecting the airstream normally directed at the windshield when the motor vehicle is inforward motion, so that said air stream is deflected upwardly.
 2. Amotor vehicle body according to claim 1, further including channel meansin communication with said deflection means for conducting a stream ofair to said deflection means, said stream of air being the source ofsaid flow of air.
 3. A motor vehicle body according to claim 2, furtherincluding inlet means disposed within a portion of the body for creatinga positive air pressure during the forward motion of the vehicle,whereby said stream of air is conducted through said channel means.
 4. Amotor vehicle body according to claim 3, wherein said channel meanscommunicates with said deflection means through a blower, whereby saidstream of air is conducted at a high velocity to said deflection meansby the action of said blower.
 5. A motor vehicle body according to claim3, further including a heat-exchanger located within said channel means.6. A motor vehicle body according to claim 2, wherein said channel meanscommunicates with said deflection means through a blower, whereby saidstream of air is conducted at a high velocity to said deflection meansby the action of said blower.
 7. A motor vehicle body according to claim2, further including air-guide means in communication with said channelmeans for venting and heating the vehicle interior space.
 8. A motorvehicle body according to claim 7, wherein said air-guide meanscommunicates with said channel means through a selectively operableclosure means for selectively adjusting the amount of air passagebetween said channel means and said air-guide means.
 9. A motor vehiclebody according to claim 8, further including a heat-exchanger locatedwithin said channel means.
 10. A motor vehicle body according to claim9, wherein said chaNnel means communicates with said deflection meansthrough a blower, wherein said stream of air is conducted at a highvelocity to said deflection means by the action of said blower.
 11. Amotor vehicle body according to claim 8, further including inlet meansdisposed within a portion of the body for creating a positive airpressure during the forward motion of the vehicle, whereby said streamof air is conducted through said channel means.
 12. A motor vehicle bodyaccording to claim 2, further including a heat-exchanger located withinsaid channel means.
 13. A motor vehicle body according to claim 1,wherein said opening is slotted.
 14. A motor vehicle body according toclaim 1, wherein said opening is provided with nozzles.